Physics
Scientific paper
Sep 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3417805m&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 17, CiteID L17805
Physics
2
Atmospheric Composition And Structure: Cloud/Radiation Interaction, Atmospheric Processes: Remote Sensing, Atmospheric Processes: Convective Processes
Scientific paper
A method is proposed for estimating base heights of convective clouds from satellite data. The approach takes advantage of the fact that convective water clouds appear as geometrically and optically thin clouds near an approximately constant condensation level in their earliest stage of growth and that deriving geometrical thicknesses for such thin clouds is less error prone. Striking is the fact that the method also provides the base height for clouds with large vertical extensions and high optical thicknesses. The method has been applied to NOAA/AVHRR data of 20 selected cloud scenes. For an evaluation satellite retrieved cloud base heights have been compared to surface ceilometer measurements at the same time. First results are encouraging. The standard deviation of the differences between satellite and ceilometer measurements is +/-369m with no systematic bias.
Meerkötter Ralf
Zinner Tobias
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